Combined typewriting and adding machine



June 26, 1923. 1,459,814

G. J. BARRETT COMBINED TYPEWRITING AND ADDING MACHINE Filed Dec. 13,1909 ll sheets-sheet l WITNESSES: INVENTOR.

@ A TTORNE Y.

June 26, 1923.

G. J. BARRETT COMBINED TYPEWRITING AND ADDING MACHINE #VITNESSES;

June 26, 1923.

G. J. BARRETT COMBINED TYPEWRI'IING AND ADDING MACHINE R mm m? g 190 11sheets-sheet (5 Filed Dec. 13

WITNESSES:

June 26, 1923. 1,459,814

G. J. BARRETT COMBINED TYPBWRITING AND ADDING MACHINE Filed Dec. 13,1909 11 sheetssheet 4 WITNESSES.-

. 575M} GM INVENTOR. i

June 26, 1923.

G. J. BARRETT COMBINED TYPEWRITING AND ADDING MACHINE F i led Dec. 13,1909 ll sheets-sheet 5 Na Ems wk mix 51v TOR.

WITNESSES.-

ATTORNEY.

June 26, 1923.

G. J. BARRETT COMBINED TYPEWRITING AND ADDING MACHINE Filed Dec. 13,1909 11 sheets-sheet 6 INVENTOR.

. WITNESSES.-

ATTORNEY.

June 26, 1923.

G. J. BARRETT COMBINED 'IYPEWRITING AND ADDING MACHINE Filed Dec. 131909 11 sheets-sheet '7 INVENTOR.

jay/9 A TTORNE Y.

June 26, 1923.

G. J. BARRETT COMBINED TYPEWRITING AND ADDING MACHINE Filed Dec. 13.1909 11 sheets-sheet 8 INVENTOR. $9 l3 BY #Q'LJ/P ATTORNEY.

W1 TNESSES:

June 26, 1923.

G. J. BARRETT COMBINED TYPEWRITINGAND ADDING MACHINE FiledDec. 13, 190911 sheets-sheet 9 WITNESSES:

ATTORNEY.

June 26, 1923.

G. J. BARRETT COMBINED TYPEWRITING AND ADDING MACHINE Filed Dec. 13,1909 11 sheets-sheet 10 wl/BM WITNESSES.-

A TTORNE Y.

Filed Dec. 13, 1909 11 sheets-sheet 11 NVENTUR: gm

9AM Wm @M H|5 ATTORNEY Patented June 26, 1923.

UNITED STATES PATENT OFFICE.

GLENN J. BARRETT, OF GRAND RAPIDS, MICHIGAN, ASSIGNOR, BY MESNE ASSIGN-MENTS, T REMINGTON TYPEWRITER COMPANY, OF ILION, NEW YORK, A COR-PORATION OF NEW YORK.

COMBINED TYPEWRITING AND ADDING MACHINE.

Application filed December 13, 1909.

To all whom it may concern:

Be itf known that I, GLENN BARRETT, citizen of the United States, andresident of (.il'fltlld Rapids, in the county of Kent and 6 State ofMichigan, have invented certain new and useful Improvements in Combinedlypewriting and Adding Machines, of which the following is aspecification.

My invention relates to adding machines.

My invention relates also to combined typewriting and adding machines.

My invention has for one of its principal objects to provide key setadding mechanism to add and subtract numbers written on a typewriter,and preferably said adding mechanism becomes operative by the'ordinaryoperation of the typewriter in writing numbers.

Another object is to provide an improved denomination selectingmechanism, the selecting devices for which are controlled by thetypewriter carriage.

Another object is to provide simple op erating devices for theaccumulating mechanism requiring a minimum ofpower. I have also providedcertain interlocking devices, and numerous improvements, both in theadding mechanism itself and also in the connections between the addingand the typewriting mechanism.

My invention consists in certain features of construction andcombinations and ar; rangements of parts, all of which will be fully setforth herein and pointed out in the claims.

A structure embodying my invention is shown in the accompanying drawingsin which,

Figure l is a general plan view of the adding machine portion of myinvention. with the covers and the typewriter and depending partsremoved.

Figure 2, is a right-hand side elevation showing a general outline ofthe typewriter, a portion of the denomination selector attached to thetypewriter, and a general side view of the adding machine proper withthe right side of the main frame removed, exposing. particularly, theconnections to the typewriter.

Figure 3 is a view similar to Figure 2 particularly.

Serial No. 532,889.

with the exception that it is taken from the left side of the machineinstead of from the right.

Figure 4 is a keyboard, together tion of the adding handles, etc.

Figure 5 is a fragmentary top view, partly in section, showing theregister wheel shaft, some of the register wheels and the details of thedial resetting devices.

Figure 6 isa left end view of one of the dials showing the resettingpawl mounted therein and engaged by the shaft for resetting by saidshaft.

Figure 7 is a view similar to Figure 6 except that the parts are shownin their nor mal' positions with the resetting pawl out of engagementwith the shaft.

Figure 8 is a rear view of the shaft-positioning cam shown in Figure 5,this view being taken looking in the direction of the arrow shown inFigure 51 Figure 9 is a fragmentary top view of a portion of one of thesliding stops for posiplan view of the typewriter with the forward pormachine case, operating tioning the setting-up racks, together with atop View of the actuating arm therefor. and also a portion of one of thesetting-up racks.

Figure 10 is a front view of some of the parts shown in Figure 9. partlyin section.

Figure 11 is a general side view of the main adding machine mechanism,the right side plate of the auxiliary frame being removed, and also aright side view of the lowerportion of the denomination selectingmechanism, parts being omitted and parts shown in section. This viewshows the parts in the positions they occupy when the type writercarriage is in the position of the lowest denomination and the 9 numerall('V is depressed.

Figure 12 is a fragmentary side view of a portion of the denominationselecting mech anism showing a connection forward to a denominationindicator and a lock for holding the adding machine mechanism out ofco-operative relation with the typewriter.

Figure 13 is a rear View of the upper portion of the denominationselector showing a. tabulator stop and rack carried by the type writercarriage, together with portions of the sliding decimal stops or thetabulator mechanism.

Figure 1 1 is a view of the selector mechanism shown in Figure iii inposition for the lowest denomination, and about to re turn to normalposition.

Figure 15 is a side view of the connections between the typewriterfinger keys and the setting mechanism of the adding machine, with partsbroken away and parts in section.

Figure i6 is a fragmentary side view of the switching mechanism forthrowing the numeral keys of the typewriter out of operative engagementwith the digit setting mechanism together with connections forward tothe denomination indicator and the lock for holding such switching mechanism in the position shown.

Figure 17 is a side view of a governor or retarder for momentarilyholding the di it rack releasing mechanism in order that tie racks maybecome properly set, the parts bciug shown in normal position.

Figure 18 is a side view of the governor shown in Figure 17, the partsbeing positioned by a finger key depressed to its limit.

Figure 19 is a fragmentary side view of the dial shield which covers thedials the instant any rack is positioned, together with portions of arack and the co-operating parts, and a right side view of the dials.

Figure 20 is a fragn'icntaiy plan view of the carrying mechanism withportions of the co-operating parts.

Figure 21 is a fragmentary side elevation of the carrying mechanism andeo-oper ative parts, in normal position.

Figure 22 is a view of the parts shown in Figure 21 just after the dialto the right of the one shown, has passed the carrying point, the digitsetting rack being shown in position to be picked up during theoperation of the operating handle.

Figure 23 is a front view of the dials, together with the dial shieldand its supports, parts being shown in section and parts omitted.

Figure 24 is a side view of one of the digit racks and the pick up bail.showing the position of the rack with reference to the driving pinionfor the operation of subtrac tion.

Figure 525 is a plan view of the parts shown in Figure 26.

Figure 26 is a lci'thand side view of the op erating mechanism andshowing also a. certain locking device, the parts being shown in normalposition.

Figure 27 is a fragmentary side view, partly in section, of the maindriving shaft and parts of the operating mechanism, the parts beingshown in the positions they occupy at a certain point in the returnstroke ol' the handle.

FigureEZB is a side view of the full stroke device for the operatinghandle.

Figure 29 is a view of parts shown in Figure it}, but in the positionsthey occupy when the operating handle is at the limit of its forwardstroke.

Figure 30 is a perspective view of the dial and detent operating camsand associated parts.

Figure 231 is a top view of the governor or retarding device shown inFigure 17.

Figure 32 is a perspective view of one of the rock shafts which areoperated by the numeral keys.

Figure 33 is a fragmentary top view showing the sight opening of theregister and the punctuation disks and their mount ings.

Figure 34 is a front view, partly in section, of said punctuation disksand their mountings.

Figure 35 is a side View of the correction lever situatedontheright-hand side of the machine.

Figure 36 is a front view, partly in sec tion, of a re ister wheel, itsdriving pinion and rack and associated parts.

Figure 237 is a right end view of a portion of the register and part ofits operating mechanism, some of the arts being broken away to exposethe dial etent arm.

Figure 38 is a fragmentary side view of a special type bar for writing apunctuation point, such as the period or comma.

Figure 39 is a top plan view corresponding to the middle part of Fig. lbut on a lar er scale.

similar letters of reference refer to like parts throughout the severalillustrations.

The form of typewriter to which my invention is attached, is immaterial.In the several illustrations herewith, for the sake of illustration, Ihave shown it in combination with a Smith Premier No. 10 typewriter.

The regular numeral keys of the t pe writer are utilized in myinvention, vt iere being practically no difference in the touch whensetting up a digit to he added, from the ftouch of the other charactersof the key-board.

The adding machine mechanisms may be thrown out of co-operative relationwith the typewriter, by pressing down. and locking the finger button 79(Fig. 4), which disconnects the numeral finger keys and the carriage ofthe typewriter from the adding machine mechanism, as will be hereinafterexplained.

The printing of the numeral in the regular manner when the addingmechanism is operative, does not operate the dials, carrying devices,etc, but. merely sets up the numerals to be added, or subtracted, afterwhich it may be accumulated upon or sub tracted from said dialsby'draw'mg forward the operating handle 158 at the left side of themachine. If,'after setting up a numeral, it is seen that a mistake hasbeen made, the set may be destroyed by drawing forward the correctionlever 119 at the right 'side of the machine. This restores the racks,which have been placed in the operation of setting, to normal positionsagain. The instant a humeral is set'up,-the dials are cov ered by theshield 130 which adapted to swing forwardly for this purpose, and areading cannot be had until the handle 158 is pulledand the numberpreviously set up, accumulated into the machine, or said shieldcrow'dedback by means of the'lev'en 127 which inightibe necessary wheiiit is.desired to copy" some reading on the dials before pullingthe hand e-TI"If theficarriage 'be moved backward to' ward a higher'denomination'after a digita'ack'has been placedand a higher digit printed in 'the'place of the one already in the inachine at that denomination,"tlie setwillbe changed to the higher digit; butif the second digit be a lowerone, then the operating handle 158 becomes locked and cannot be moveduntil the correction lever 119 restores the parts tonormal position.

The machine is' capable of both addition and subtraction beingcontrolled in this respect by 'the button 132'. The operation of thisbutton 132' may take plac e a t any. time before' starting to pull thehandle 158. In

the ordinar operation of the machine, when.

it is to copy a total, the machine is set for subtraction and ifthecorrect reading be copied, pulling the handle 158 will restore thedials automatically to d. If, however, a mistake has been made incopying, and a numeral is still seen in the dials, then the button 132'may be returned to normal position and the amount actually copied be setup and added into the dials, which will restore them to the numberoriginally upon them and which should have been copied.

, If it be desired to copy a total and not destroy the reading upon thedials, the button 79 should first be locked down.

The denominating or denomination selecting is automatically goverened bythe position of the typewriter carriage, there being certainpredetermined spaces through which the carriage passes wherein it ispossible to set up a number. which spaces are called adding zones? Theseadding zonesfmay be placed anywhere at the wish of the operator. andthere may be as many of them as it is convenient to have in the travelof the carriage. Thus items may be correctly added along on one line aswell as in a column. Depression. of the button 79' reir ders all of theadding zones inoperative.

Having outlined the operation of my invention in general, I will nowgive a more detailed description of the same.

The invention applicable or adaptable to any form of typewriting machinebut 1 have here shown it applied to the ty pew ritcr known commerciallyas the Smith Premier No. 10. This machine comprises a main frame A fromwhich rise standards B which support a carriage Ghaving a roller platenD mounted thereon. Said carriage is drawn across the machine in themanner usual in typewriters by means of a main spring (not shown), andthe step-by-step motion of said carriage controlled by an escapenientwhich operated by a lever or small universal b'ar Eadjacent the printingpoint,

which in this machine is on the front face of the platen. ,The carriagefeed mechanism is more fully shown in the patent to Alexander T. BrownNo. 903,4:44 dated November 10th,

1908. As is also more fully shown in said patent, there is a series offront-strike type barsLF. only two of which are indicated in Figure 2 ofthe present drawings. These type bars F are operated by a linkage Gwhich connects said, type bars to hell crank key levers H in thekey-board of the machine, said key levers being operated by the stems If character or printing keys J. 15; reference to Figure 4 it will beseen that these character, keys include capitals and small letters,numerals and various other characters, so that the machine is adapted toWrite any words or numbers. The carriage C has depending from the rearthereof two armsK which sup. ort a tabulator rack or column stop ,bar.upon which there is mounted one or more column stops M. Thibar L isformed as usual with a series of notches spaced 2. letter space distancea al-L and each of said stops M can be adjusted in the usual manner toany desired letter Spam.

osition along said bar. 11 co-operate with a series of denominationalstops h which are guided at their upper ends by a guide plate 0. Thesedenominational stops are connected by a series of levers in the base ofthe machine to a series of tabulator keys P arran ed just above theprinting key-board of tietypewriter. Said levers also operate auniversal bar \vh ich efl'erts a release of the carriage from thecontrol of its escapement so that when one of the keys is depressed thecarriage runs freely until it is arrested by the operated denominationalstop co-operating with one of the column stops ill. I have not shownthis tabulator fully as the details of its construction form no part ofmy invention and said details an; immaterial to my invention. Thetabulator actually employed in this machine and pan The column stop SllInn

tially shown in the drawings, is fully shown and described in the Frenchpatent to Alexander T, Brown, No. 388,859, dated March 14th, 1908.

in combining my adding machine with the typewriter the frame ofthe"typ'ewriter is mounted on the frame'of the adding machine so thatmost of the adding mechanism is beneath the typewriter;

The main frame of the adding machine comprises side plates 1 which areconnected together at their rear ends by aback plate 2. These sideplatesare also connected together by two frame rods 11 (Figure 1) and ialso by a cover plate 3 for the front part of the adding machinewhere'it projects out in front of the frame 'of the typewriter. Saidtypewriter frameis supporte'd'on the side plates 1 byr'neans'ofinterposed shortpdsts. 1, each having a reduced part that fitsinto a ported on' the frame rods 11 by open ended" slots formed in theends of the plates 10, This auxiliary frame is also provided with acover plate 10 (Figure 3) and it may also be provided with a bottomplate so that most of the moredelicate mechanism of the machine isenclosed in a box which protects it from dust. The side plates 10 and 10of this auxiliary frame areconnected together by several frame rods,some of which, marked 201, are shown in Figures 1 and 11 and others ofwhich will be referred to later on.

In the typewriter shown in the drawings the numeral keys are arranged intwo rows at the sides of the key-board, those keys adapted to write thedigits 1, 2, 3. 4, and 5 being at the left-haud side of those keysadapted to write the digits 6, T, and8" and 9 being at the right-handside of the keyboard, all as shown in Figure 4. The key stems I arepivoted at R to the bell cranks H and to each'of the said bell cranksfor the numeral keys. there is pivoted a depending plunger 96 whichextends down into the adding machine and constitutes a connectionbetween the typewriter keys and the adding mechanism. These plungei'sare guided in the adding ma: chine by passing through suitable slots 95"in guide plates 95 and 95', one situated at the left and the other at.the righthand side of the machine. Below said guide platesthere' ispivoted a series of five rock shafts 32 at 'the left-hand side of themachine and four rockshafts 32 at the right-hand side of the machine.said rock shafts hzwing arms 102, (Figures and 32) adapted to be struckby the lower endsof the bars 96, 96 when the keys aredepress ed.

The construction is such that when any numeral key is depressedoneofthese rock shafts is rock'ed'toward the front of the ma chine. Therockshafts 32 are" pivoted at their outer ends in a frame plate 98 whichsecured by screws to lugs projecting from 32 are journaled in the sideplate 10''ofth auxiliary frame and iii a frame plate 98 secured to lugsof the right-hand side plate 1.

is shown in Figure l thej shjaft s"32,t32' are of different lengths sothat their inner ends terminate at different points transversely of thenachinefAt its inner end each of the rock shafts 32, 32' is providedwith an up- 'standing arm 33 (Figures 11 and-32) and to each of saidarms is pivoted a rearwardly extending link 34 which at its rear end ispivoted to an arm 21 (Figures 9, 10 and 11.)

of one of a series of vertical rock shafts 20, the arrangement of whichwill be understood by reference to Figuresl and 11. The rock shafts 20(Figure 11) are journaled at their lower ends in a frame plate 23supported at its ends by the side plates 10, 10 and the upper parts ofsaid shafts are journaled in a similar horizontal frame plate is shownin Figures 9 and 10, each of the rock shafts 20 has its upper end formedinto a crank or eccentric part 20 which works in a notch in thelowerredge of one of a series of nine stop slides "18. As shown inFigures 1 and 11, the slides 18 extend transversely of the auxiliaryframe, being mountedin slots in a series ofpartition plates 19 which aremounted in frame rods 131 which connect the frame plates 10, 10, thepartition plates 19 being suitably spaced apart, as for example,by'collars strung on the rods; The construction is such thatwhen thenumeral key is depressed, one of these slides 18 is moved a shortdistance toward the right.

The slides 18 constitute stops for a series of sliding bars 12 which liebeneath the slides 18 and extend thence toward-the front of the machineandhave connected therewith the rack bars which operate the registerwheels. The construction and mounting of these bars 12 will be describedlater on. Each of them has however a projection or lug 83 projectingfrom its upper edge and normally standing in front of the foremost oneof the slides 18; and this lug is adapted to co-operate with a series ofdownward projections 18 (Figure 10) formed on the un- .der side of eachof the stop slides 18. It will be understood that there is one of thesestop projections 18' for each of the slides 12 and that there is oneslide 12 for each register wheel. Vhen one of the numeral l-:e rs isdepressed and the corresponding slide 18 is moved toward the right. itbrings the sereral stop projections 19 into the paths of thecorresponding stop lugs 83 of all of the slide bars 12. Means areprovided for normally holding the slide bars in their forward positionsand for releasing them one at a time as the keys are depressed and thetypewriter carriage steps through the adding zone.

The slide bars 12 and some of their cooperative parts are best shown inFigures 1. and 24. Each of said slide bars has two slots 900' formedtherein and elongated lon- 'gitudinally of the slide har. Bolts 200project from a companion slide bar 13, the construction being such that.the bars 12 and 13 are free to move longitudinally one with relation tothe other toan extent limited by the length of the slots 200. These twobars are connected by a spring 14 which normally holds them in therelative positions shown in Figure 24. The bar 13 has an elongated'slotin its forward end which receives a frame rod 28 that joins the two sideplates 10 and 10' and the bar 12 has a similar slot at its rear endwhich co-o 'ierates in a similar fashion with the frame rod 27. The rods27 and 28 are peripherally groove-'1 so as to guide the bars 12 and 13.It will be seen that these two bars 12 and 13 form in effect a compoundslide bar, the two parts of which are connected by pin-and-slotconnection and by the spring 14. A long spring 46 is connected atitsforward end to an car 157 on the bar 12 and the rear end of saidspring is connected to the upturned forward edge of the frame plate 22.this spring tend ins: to slide the bars 12, 13 toward the rear o flthemachine. Each of the bars 13 has depending from its rear end an ear 13to which is pivoted at 13' a forwardly extending bar 35 having rivetedto its forward end two racks 36 37, the former of which is adapted toengage the underside and the latter of which is adapted to engage theupper side of a pinion 49, loosely mounted on a shaft 50. The racks 36and 37 and the bar or pitman 35 are adapted to he moved up and down toengage one or the other of the racks with the pinion 49' by means whichwill be hereinafter described. is adapted for addition when the rack 16meshes with the pinion 49 and for subtraction when the rack 37 mesheswith said pinion. all as will appear more clearl hereinafter.

The bars l2. 1 are normally held in their forward positions as shown inFigure 24 by means of a series of pawls 25 engaging The machine teeth12" formed on the under sides of the bars 12. When the typewritercarriage is in the adding, zone one of these pawls 25 is released uponeach depression of a numeral key by means which will now be described.

The connections to the typewriter carriage are best shown in Figures 2,3, 13 and 14. A bracket 84. consisting of a plate of sheet metal bent atright angles, is secured to the guide plate 0 of the denomination stopsN. and at its lower end said bracket has pivoted thereto at 84 a lever88 to the upper end of which is pivoted a horizontally disposed arm,draw plate or coupling bar 85 having at its free end a hook-likeprojection 85 which stands in the path of a nose or projectin part M ofthe column stop" M. The free end of the draw plate 85 is normally heldup in the position shown in Figure 13 by means of a spring 87 connectedto an ear 85 of said draw plate and to an ear 88" of the bracket 84. Theupward motion of the arm 85 under the impulse of the spring 87., islimited by a. pin 86 which projects towardthe front of the machine fromthe free end of the arm 85 and which is guided by the lower edge of aprolongation of the plate 84. The construction is such that when thecarriage reaches the adding zone and the stop M: reaches the fieldcontrolled by the denominational stops said stop M will contact with thehook 85 and will draw the bar 85 and Iever.88 .step-by-step with thetypewriter carriage. The guide edge of the plate 84 is formed with aninclined part 84 which guides the.pin.86 downward as the carriage passesout of the adding zone thus drawing the hook 85 down to a position whereit is free of the stop M as will. be

understood by reference to Figure 14. then the hook 85 escapes from thecolumn stop theleyer 88 is .thro wn back to normal 'posi' tion by aspring 89 which is connected at its Tho, stop-.M andithe typewritercarriage are then free to move on without further afi'ecting theaddingmachine It will of, course be understood that the column stop M isadjustable to any, letter space position along the bar,L so that theupper end to the braclret 84 and at its lower end to the lever 88.

adding column It will also be understood that an suitable numberof,these column stops il ruay be provided and each one situated asdesired. thus locating a plurality of adding columns or zones on thepaper in the machine. have shown two such stops .in Figures 1.3 and 14.but any suitable number can be used. and all of the numbers written inthe zones determined by these steps, will beadded, but numbers writtenelsewhere will not affect the adding machine V 1 The arm 88 constitutesin effect one arm of ,the spring as will be explained hereinafter. Thearm 90 has pivoted thereto the upper end of a link 69, the lower end ofwhich is pivoted to the rear end of an arm 68 rigidly secured to (atransverse shaft 70 which is pivoted in the framework of the addingmachine.

The construction is such that as the typewriter carriage passes throughthe addingzone, the arm 68 is moved downward. As will be understood byreference to Figures 1, 2 and 3,

1 two frame plates 67 and 67' are secured to lugs'projecting inward fromthe left-hand and the right-hand side plates 1, respectively and theshaft 70 is journaled at its ends in these frame plates. As will be seenby refer enoe to Figures 1 and 12, the shaft 70 has mounted on itsleft-hand end a plate 92 to which is connected the rear end of a spring93 which is adapted to restore said shaft and the parts connectedtherewith to normal position when the typewriter carriage passes out ofthe adding zone. This plate 92 has an arm 92 projecting therefrom whichis adapted to engage a stop pm 120 pro ecting from the plate 6 to limitthe motion of the shaft and its connected parts under the impulse of thespring 93. As is shown in Figures 1,

2 and 12, the shaft 70 has rigidly mounted thereon an 'arm 71 which isconnected by a link 72 to a segment 74 loosely mounted on a rock shaft58 which is journaled at its ends in the frame plates 67 and 67 so thatsaid segment 74 is rocked in unison with the shaft 70 but in theopposite direction. The teeth of the se cut 74 mesh with a pinion 73rigid on a s aft 63 which is journaled at its ends in the frame plates67 and 67'. The shaft 63 has near the middle part thereof, as shown inFigure 1, a spirally arranged series of pins 61 which are adapted toserve as abutments or interponents to obstruct and modify the motion ofcertain key operated parts as will presently appear. The pins 64 do notextend entirely around the shaft 63 but there is left a vacant space asshown in Figure 12. These pins are so spaced apart that when thecarriage is in an adding column at the position of highest denominationthe left-hand one of said pins stands vertically above the shaft 63 andthe succeeding pins are brought successively to the vertical position asthe carriage steps from one denominational position to another. A framerod 66 mounted in the plates 67 and 67, has

a series of arms 65 pivoted thereto and projecting toward the front ofthe machine, each of said arms being in the vertical plane of one of thepins 64. As best shown in Figure 2 the forward end of each of these arms65 projects downward and has a notch 65 in its lower end, which notch isadapted to engage the corresponding one of the pins 64 when said pin isin its vertical osition and when the arm 65 is depressed. Each of saidarms 65 has a pin 65 (Figure 11) projecting from one side thereof andthis pin plays in a slot in the free rear end of the horizontal arm of abell crank lever 62, which lever has also a depending arm connected by alink 61 with the corresponding one of the detents 25, which detents ashas been explained, control the denominational slides 12, 13.

' The bell crank levers 62 are all independently pivoted on a bail rod60 which is supported at the rear ends of two arms 59 pro-"" jectingtoward the rear of the machine from and rigidly mounted on a rock shaft58. As will be presently described, this rock shaft is adapted to berocked at each depression of a numeral key, the rod 60 being depressedat each key depression, carrying with it all of the bell cranks 62 andthese carry with them the arms 65. As the arms 59 are substantiallyparallel with the links 61, this depression of the bell cranks does notaffect the detents 25. If the typewriter carriage is in the addingcolumn, however, one of the pins 64 will be standing vertically and thecorresponding one of the arms 65 will be arrested by said vertical pin64 and the rear end of the bell crank will also be arrested by the pin65. As this end of the bell crank has its motion obstructed and cannotmove down with the rod 60, the pin 65' becomes the temporary fulcrum ofthe bell crank and the point 60 of said bell crank is depressed, withthe result that the vertical arm of the bell crank is moved toward therear of the machine, thus operating the link 61 and the correspondingdetent 25 and releasing the corresponding slide bar 12. The arms '65 andbell cranks 62 constitute a so t of-feelers," the whole series of whichis operated a t each key depression. lVhcn one of these feelers isobstructed by a pin 64, its motion is so modified as to cause it tooperate the corresponding detent 25.

The same kc) depress on which depresses the rod 60 also mo es tooperative position one of the slides 18. The selected one of the slidebars 12. being now released. will more inward the rear 01' the machineunder the impulse o its spring 46 unt l it is arrested by the operatedslide 18 after moving; one, two or some other number of units distance,depending upon the key depressed. .Vhen the kc; is released the bar 60rises and re losses the detent which returns to normal position; and alittle subsequently the slide interfere with. the subsequent operationof the slides to set upadigit-in another denom- Enation. In Figure 11thc shaft 63 and the connected parts are shown in the positions ..59 andthe numeral: keys, will nowbetlethey occupy when the t 'peivritercarriage is at the lowest denominational position n the adding columnand the rock shaft- 32' which is connected with thefi)" key is shownoperated. The slide-120i lowest denomination is shown arrestedgby therea-rmost'one of the slides 18. .Whcn thelgey is released this slide 12will more a-short distance until it is arrested by the engagement of the,detent :25, the finalnosition of the.lug, 83 be ing,just It will benotedl that ordiniii-ily. time carriage is steppingjroinione letterspace position to another in thefaddingt 'z o-ne,ythe shaftfii} isentirely free except for its col1- nectidns to the draw bar. so thatthis shaft .andthe parts through which it=is operated have no resistanceto overcome. The pins i t do 'not shift the pawls- 25 by the fstepbystep motion 0t s'aiglpins' from one denom nationalposition toianothensaid p ns'had this or similar work to'iper formlthere' would be anappreciable amount, 'ofresistaneefto the rotation of the shaft 63 which,throu gh looseness of joints and fleigure of parts, might cause someinaccuracy, in the step-by-step motion of said shaft. Ks the shaft turnsentirely free from any resistance there none of this straining orficxure of parts; and the I shaft is positioned at each step of thetypewriter carriage with much greater accuracythan would he the case ifsaid shaft had to overcome some such resistance as that referred to. Thearms 33 are preferably not rigidlymounted on the ends 'ofthe shafts 32.32' but are mounted thereon in the man ner shown in Figure Each of thesearms is loosely mounted on the end of the shaft and the hub of said armis formedwith a slot 330 extendingpart way around the shaft and a pin331 projects. from the shaft into said slot. said pin preventing motionof the arm 33 lengthwise of the shaft. The arm 3.. is controlled by aspring 332 coiled about the shaft and connected at one end to said armand at the other end to a collar 333 fixed on the. shaft by a set screwf jiil. The spring, tends to turn the arm toward the front of themachine. its motion in that dire tion being limited hy'the pin 33]contacting with the end of theslot 330. When the shaft is rocked by thedepression of a lie the arm 33 is operated through the spring 332 untilthe slide, 18 strikes the right-hand frame piecelO andis arrestedthereby, so that the .vary in extent;

slide 18 is alwayscorrectlypositioned, even though the different keydepressions may If the slide 18. is arrested either in themanner justdescribed sor from some accidental-realise, the shaft 32 or 32 continuesto rock against ,the tension of the spring 333, the pin 331 moving awayfrom the end of-the slot. so that no stiaining of the parts occurs. V

The connections between therocl; shaftscribed. referencewbeinn had moreparticularly to Figures 5. 3..15 and 532. As

,shown in Figurfesdfi and 32 each of the rock shafts 32. 32.. has on itsouter end in additiongto fltlre'arm; another arm 97, the latter,PIQjBCtlIlg-JIPXYQTd at an inclination toward -.the rear of-the machine.There are two universal bars for -co-operation. with these-armsfifloneuniversalhar at each side of. theaiiachine. .A'sshowin -inFigures Land the left-hand-universa-l bar 101- consists a horizon tallydisposed plate having arms or contact projections, 1011 v dependingtherefrom, .one of SiLiQgPlOjBCtlOHS. lying in front of each of thearms 9fi' sothat when any of .the rock shafts 32 is operated .byits=numeral l-zeythis universal bar will he moved; lengthwise toward thefrontofthe machinet To this end said universal bards mounted on twoupstanding parallelg links 51 14 which, are 'pirotedto the plate 98 :byscrews 114;". :The ,iiearendiof the uniyersalbaii lfil is connected'b'yQa' link 100 with anvarmflltl depending from the rock shaft-58;, Asimilar universal bar 101',. is similarly-mountedon links -114" :attheright-hand side of themaichine and is operated by arms 97: on ther ockshaf'ts 32"; The universal liar-101" is connected by alink 1W) withanother arm 109 dependin n from the right-hand end of the shaftflh. It;will be seen that when any key is depressed both of these universal barswillhe moredtoward the front. of the machine. as. theyv are .conmam!tomore togetherihrongh the. shaft The shaft fis aud the r-artscrmnecteil therewith a re restored tonormal position by a spring 110ivhielrisconnected at one end to the it tthand arm 10 9'andat theother0nd to a pin 67," projecting from the plate 67. lVhcn the universalb'ars return to normal pos tion. they restore to normal position theoperated rock shaft 32 andthe parts connc ted therewith, includinir theslide 18.

It is desirable that the adding mechanism shall lessen the speednof thetypewriter mechanism .as little as possible. Some typewriterescapements, including the one used in the typewriter shown in thepresent case. are so constructed that the typewriter carriage begins itsstepping motion the instant the type strikes the paper; and with someescapementsthe carriage is released for its stepping. motion before thetype strikes thepaper. Unless provision was made to the contrary theadding machine might either delay the stepping of the typewritercarriage or if said carriage began to step before the adding operationwas complete it might disarrange the add ing mechanism and cause thewrong numer to be set up therein. 1 have provided for this as follows:The notches in the arms 65 are adapted to hold the pins 64 so as toprevent the shaft 63 from turnng until the bar 60 has been raised to ortoward its normal position. It is in order that this restraining of theshaft 63 may not interfere with the stepping of the typewriter carriage,that the loose connection between the lever arms 88 and 90 (Figures 13,14) is provided. This loose connection permits the arm 88 to move withthe typewriter carriage while the arm 90 is held stationary by the partsjust referred to, the result being that the spring 91 is stretched.

-As soon as the bar 60 rises, releasing the shaft 63, said shaft ste svery quickly to its new position, driven by the spring 91.

As it requires a certain amount of time for the slidebars'12, 13 to'bemoved toward the rear of the machine by their springs 46,1 haveprovideda governor or retarding device to delay the return of thekey'controlled parts of the adding mechanismto' normal position, thisdelay or retardation being only for the very brief length-of timenecessary, to allow the slides '12, 13 to complete theirmotion. Thisgovernor or retarding device is best shown in Figures 17, 18 and 31 andits connection with the remainder of the mechanism is best shown inFigures 1 and 3. Near its left-hand end the shaft 58 has projectingtherefrom toward the rear of. the machine a rigid arm 108, this armbeing as shown in the present instance a part of the same lever as theleft-hand arm 109 which is connected with the universal bar 101. The arm108 has formed on its rear end several ratchet teeth 108 which when theshaft 58 is rocked by the depression of the key are adapted tolie-caught on the car 107' of a pawl 10? which is pivoted by a screw 106to a lever 105. which lever is pivoted on a pivot screw 104 which isthreaded into the frame plate 67. The pawl 107 is controlled by a spring108". The lever 105 has a limited motion determnied in one direction bya depending arm thereof which is adapted to engage the shaft 63 and inthe other direction by a forwardly extending arm which normally restsone stop pin 112 projecting from the plate 67. The forward end of thislatter lever arm is formed with gear teeth 105' which mesh with teeth113 on a weighted disk 111 which is journaled on the shaft 58. As hereshown the teeth 113 consist of pins inserted in the disk 111. Theconstruction issuch that as said arm soon escapes from the pawl 107after which the shaft 58 and connected parts snap quickly to normalposition and the lever 105 and disk 111 return to normal position bygravity. The disk 111 is connected with the shaft 58 through compoundlevers which give said disk a high leverage on the shaft. this retardingdevice delays fora fraction of a second the first part of the returnmotion of the shaft 58 and the other keyoperated parts to normalposition and assures that these parts do not return to normal positionuntil the denominational devices (slides 12 13) are positioned by theirsprings. The rock shafts 32, 32' are not provided with returning springsbut are restored to normal position by the universal bars 1.01 and 101acting. on the arms 97, 97. It will thus be seen that this retardingdevice also delays the return to normal position of the rock shafts 32,32' and the slides 18. L

In order to prevent the depression of a second key until the keypreviously depressed has returned to normal position the universalbars.101 and 101' are each formed with a series of stop surfaces 97(Figure 15). When the universal bar moves toward the front of themachine all of the arms 97, 97 of unoperated rock shafts 32, 32 arecovered by these steps 97" so that all of the rock shafts except the onethat operated the universal bars, are locked in normal position. Thismakes it impossible to depress any one of the remaining numeral keys farenough to cause its type to print upon the paper and it prevents anyoperation of the adding mechanism by said key until the key previouslydepressed has returned so far toward normal position as to permit theuniversal bars and connected parts to return to normal position: inshort until the operation of the adding mechanism by the previouslydepressed key. is complete.

From what has been said it will be understood that when a numeral key isdepressed while the typewriter carriage is in an adding column one ofthe denominational members 12. 13 corresponding to the denominationalposition of the typewriter carriage. moves toward the rear of themachine until it is arrested by that one of the stops bars 18 whichcorresponds with the operated nu- It will be seen that meral keyi Whenthe typewriter carriage has passed out o'l' the adding column all ofthe'ltey set inembers 12,13 are restored to normal position by anoperating mechanism to' be hereinafter described and it is on theirreturn strokes that theyioperate the'register.

The register ismonnted in a pivoted frame carried by. and rigidlysecured to a rock shaft 56 (Figures 1 and 11), said rock shaft beingjournaled in the frame plates and 10 near their forward ends. Theconstructionof this frame will be best understood by reference to.Figure 1, l1 and 25. Said frameicomprises twoend pieces 53, each of l-whieh has a hub 53 secured rigidly to the shaft 56 as.- for example bya pindriven through said hub and shaft. These end pieces 53 extendtoward the rear of the machine-and-attheir rear ends they are con--"nected by a rigid fl'H-IDQ'I'Od 196. The frame plates-53 also extendfrom the shaft 56 forward and downwardand are connected by a secondrigid. frame rod l96. The register wheels or dials'lti are looselymounted on a shaft which is journaled in the end plates Between each!pair of adjacent register wheels thereis a; partition plate 53 ofsubstantiallythe same general outline asthe end plate 53. Thesepartition: plates 53 are iifl strung along the frame rods 196 and 196where they are-suitably spaced apart, as for example, by-collars orwasheis. 'lhe register-frame also comprises a rod 57 which lieslengthwise of the frame and on which are :Wpivoted the detent pawls 54.

The construction of each register wheel will be understood by referenceto Figure 5. From this figure it will be seen that the space-on theshaft 52between'two consecutive partitionplates 53, is occupied by asleeve or hub 145 which is journaled on said shaft-.52. As here shownthe dial 146 is made-of sheet metal and is mounted on said hub.-N'extthe dial is a ten-toothed star wheel 148, the form ofwhich is shownin Figure 3-7, and which cooperates with the detent 54. To the-rightofthis star wheel 148 there is rigidly mounted on the sleeve 1-15 a gearwheel or pinion 51 by means of which the register wheel is turned. Atthe left of thedial and at the extreme left-hand end of the sleeve 145there is a plate or carrying trip 152. Each of the pinions l9 thnt isengaged by the racks 36, 37 has side by side therewithand rigidlyconnected thereto a gear 19 with which the corresponding register wheelgear 51 is adapted to mesh. as indicated in Figures 36 and 37. Theregister frame, however; normally no stands in the position shown inFigure 11 with the gears 51 raised out of mesh with the gears 19. Thedouble gear 49, 49, the racks and certain parts of the transfermechanism, are separated into denominational groups by partition plates38 (Figure 11) which are mounted onframe rods 39 and through which theshaft 50 and the rod 48 pass. This combination of frame rods andpartition plates not only keeps theparts properly spaced transversely ofthe machine but'also enables me to provide at very rigid and at the sametime a very-light constrnc-' tion.

The-. register wheels are normally held against-rotation by thedetents54; the form of which is best shown in- Figure 37. Thesedetentsare pivoted on the rod 57 and havehubs whichzarei equal in length :tothedis tance bctweena two consecutive partition. plates 53-. The detents 51 are pressed ClOWDi- & 'c1.{'Cllnit0 engagement with the star wheels:1483 by means of springs 54" (Figure- 11),v ear-ll otwhieh' is connectedatone end to an ear bent oifi fl'OIIlutllQ upper edgeot' the detenit 54and at the other end toan ear bent off 5-5 from the loweriedge of theadjacentparti: tioniiplate 53-5.

The operating mechanism for restoring. the :keyset-partsto normalposition and for adding or.- subtracting on theregister-z thengonnumber-1 that has been set up by the-.keis, is

controlled by an operating handle 158 F igr ure- 1 iat the left handside of the mac ine. Th s handle is rigidly mounted on the main. rookslraft 1l'i0, one end of which is-journaled 5k"- in thele lt-hand frameplatel-aindthe inner. end Of'WlllCll is journaled in" the frame plate 10of the auxiliary framet Thisihandle normally stands at aniinclinationtoward the; rear ofthe machine as showniby dotted lines in Figure 28 andit is operated'by drawing. it toward the front of. themaehinei In orderto compel a full stroke! of the h'andleto be-made atoothed segment 159(F igui'e=28-) is'mounted on the shaftlfiO just ina 105* sidethe frameplatev l and this-segment 60- operates. with a double acting pawl-16Lwhich is controlled by=a spring162 connectediat .one end to the pawlandiatthe other end to a stud-163 projectingfrom the; frame myplate 1.When the! handle starts forward this pa wland segment-prevent itfrommovmg. backward until it has completed its for ward-stroke and the pawlhassnapped off of the segment. the handle the pawl is automaticallyreversed and'prevents a forwardstroke ofthe handle. until the returnstroke is completed. Referring more especially to Figures 25,

26, 27, 29- and.30, the shaft 160 has rigidly mounted thereon near itsinner end a sleeve which has rigidly mounted thereon two arms and asmost clearly shown in.Figure 30. The arm 190 has at its upper end aninclined cam edge 190 which is pro- 125 longed toward-the back of themachine in a long dwell l90", the outer edge of which is inithe arcof acircle concentric withthe shaft 160. The arm-170 also h'as'at its perend an inclined cam edge 170 which is 13o On the return stroke of 1x5

